v0.21.2

Added

• Added a packaged /parallel-context-build prompt for parallel context-builder handoff passes.
• Added a packaged /parallel-handoff-plan prompt for external-reference research plus local context-builder passes that produce an implementation handoff meta-prompt.

Changed

• Strengthened context-builder guidance so handoffs require reading all relevant files and doing needed tool-available research before summarizing.
• Expanded the bundled pi-subagents skill with tool-level recipes for the packaged prompt workflows, including context-build and handoff-plan patterns that parent agents can apply without slash commands.
• Updated README.md to explain the bundled pi-subagents skill, what it covers, and how it helps the orchestrating agent.

Fixed

• Make active-long-running notices time-based by default, with turn and token thresholds available only as explicit opt-in budget guards.
• Stop async status listing from inventing needs_attention with default thresholds when the runner has not persisted a control state.
• Treat string "false" output settings as disabled output so parallel reviewers do not collide on a /false output path, including chain-parallel agent defaults.
• Wrap long /subagents-status detail output/event lines instead of truncating them with ellipses.
• Treat cleanup after a clean terminal assistant stop as success even when the final assistant text is empty, using a short grace period before terminating lingering child processes without surfacing scary final-drain warnings.
• Express flexible tool schema fields as anyOf unions without parent-level type arrays, avoiding schema shapes rejected by strict providers such as Moonshot/opencode-go.